21148492048

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77751809}}^1$

素因数の和:77751834

約数の個数: 20

約数和(自身を含む): 43385509980

約数和(自身を除く): 22237017932

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77751809, 155503618, 311007236, 622014472, 1244028944, 1321780753, 2643561506, 5287123012, 10574246024, 21148492048]

約数ペア:

[(1, 21148492048), (2, 10574246024), (4, 5287123012), (8, 2643561506), (16, 1321780753), (17, 1244028944), (34, 622014472), (68, 311007236), (136, 155503618), (272, 77751809)]